Direct-driven deep-well pump



R. SCHORR.

DIRECT. DHIVEN DEEP WELL PUMP.

APPLICATION FILED MAY 26. 1919.

Patented Apr. 5, 1.921.

2 SHEETS-SHEET I.

A ,infr I Pillailvrf lill/f .l I

./f ab Z R. SCHORR.

DIRECT DRIVEN DEP WELL PUMP.

APPLICATION FILED MAY 26, 1919.

Patented Apr. 5, 1921.

2 SHEETS-SHEET 2.

PATENT OFFICE.

ROBERT SCHORR, OF SAN FRANCISCO, CALIFORNIA.

DIRECT-DRIVEN `LDEEP-WIEII'IIZ PUMP.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application led May 26, 1919. Serial No. 299,752.

Deep-Well Pumps, of which the following is a specification.

The object of the present invention is to provide an improved direct driven rotarydeep well pump.

Deep well pumps of the present types have their driving power applied tothe motor above the surface of the ground, and the driving shaft extends therefrom through the well down to the pump. Since this shaft is sometimes several hundred feet long, it requires many bearings and it also requires protection of these bearings from sand and grit which may be carried by the water.

his is not only an expensive arrangement but is also absorptive of power. In time, the bearings Wear and it is also diicult to maintain them in exact alinement. Another source of expense 1s the long discharge pipe which has to reach up to the surface of the ground from the pump, which is located close to the bottom of the well. Since the well hole is rarely straight, it is sometimes very'laborious to lower or to withdraw such a pump. The withdrawal for inspection is very costly, as the pump column and the inclosed transmissionl elements have to be dismembered, piece by piece, until the pump itself reaches the surface.

The object of the present invention is to avoid all these objections by connecting a fluid (including an internal combustion) or electric motor directly to the pump and lowering this directly connected pumping outfit into the well and sealing it therein. As the pumping outfit can be sealed at any oint in the well casing, it can be .raised at tlmes of highwater and can be lowered with the receding of the water level, thus effecting great economy in operation.

In the accompanying drawings, Figure 1 is a vertical section showing one form of my improved pump; Figs. 2, 3, and 4 are similar sectional views showing other forms thereof; Fig. 5 is a plan view of an expansible and-collapsible anchor rin Fig. 6 is an enlarged sectional view on t e line 6-6 of Fig. 2.

Referring to the drawings, a centrifugal pump 1 has a shaft'2 which extends through a stuiiing box 3 and is connected by a flexible coupling 4 to a driving shaft 5, said driving shaft 5 carries circular motor elements 6 .which are inclosed in a tubular. shell 7 which shell is connected to the pump casing b y a saddle 8. The shell 7 is sealed watertlghtly at its bottom by a 'stuffing box 9 and 1s closed tightly at its top by a cover 10, which is `bolted to a housing head v11. The housing head 11 incloses a thrust bearing 12 and a radial bearing 13. It also provides a seat 14 for a hollow tire or sealing ring 15. At the lower end of the pump lis arranged a second sealing ring or hollow tire 15 in a Seat 14', formed on the pump housing. These Atires or sealing rings can be iniiated. s o as to'be forced tightly against theV well llmng steel casing 16, by permitting air or other fluid through a small hose pipe 17, the two tires themselves being connected by a small hose pipe 17 A somewhat larger pipe or hose 18 is provided for energy leads 31, pipes 32 for lubricants, and the like, and for the purpose .of suspending and hoisting the pumping outfit. If thev motor is of larger power,it has to be built 4up in series, requiring intermediate bearings 19. Bearings are preferably of the self-lubricating type, ywith graphite inserts and graphite grease-packed.

Fig. 2 illustrates a modification in which the shaft coupling 4 is located outside of the motor'housing 7, and in which a single sealing ring 15 is placed close to the pump discharge end. l

Figs. 3, and 4 illustrate a directly connected pumping outfit of slightly different design for use with wells which'are perforated for some length to tap several water strata.

In this case, the entire motor structure is surrounded by a mantle 2O which joins a top casting 21. This top castin 21 is threaded or flanged at the top. his top casting 21 is suitably shaped to make a concharged by the pump can also be employedfor inflating said tube 26.

To withdraw the pump, it is necessary to collapse the tire or tires by Venting or draining, both operations being performed from the surface of the ground.

It is obvious that the provision of a sealing ring or tire, which only requires to be collapsed to permit the pump to be withdrawn, very much facilitates the withdrawal of the pump.

The well is generally perforated for the admission of water at its lower point, in which case no vdischarge pipe isused at alland the tire, or plurality of tires, is or are placed closely adjacent to the pump. In some cases, however, the perforations eX- tend for some distance up the well and in that case, a short discharge pipe is used up to the uppermost perforation and the seal is arranged there. perforations should reach close up to the surface, requiring a discharge pipe for their entire length, -an expansible and: collapsible anchoring ring with fluid passages is advantageous since it holds the pump steady and prevents undue vibration.

The discharge piece orv elbow on the top of the well can be sealedalso into the well casing, or it can be connected thereto by flangesfor the like in the event of not using zi discharge pipe from the pump to the surace.

A small pipe 33 for compressed air can( be added for the purpose of blowing out water which may seep in time into the -motor caslng. l

It is obvious that sealing and anchor rings may be also expanded and collapsed by mechanical means, operatable from the surface instead of fluid pressure and draining or vacuum. A

1.. In combination with a well casing, an adjustably mounted pumping unit consisting of a vertical motor` in a water-tight housing and a rotary pum directly connected to themotor-shaft, sai well casing forming the discharge conduit for the fluidpumped, the fluid pumped surrounding said motor in the water-tight housing.

2. In combination with a well casing, an adjustably mounted pumping unit consisting of a vertical motor in a water-tight housing and a rotaryY pump directly connected to the motor-shaft, said well'casing forming Even in 'the case thatv the discharge conduit for the Huid pumped,

and a hollow, .inflatable ring aroundv the of a vertical motor in' a watertight housing and a rotary pump directly connected to the motor-shaft, said well casing forming the discharge conduit for the fluid pumped, and hollow, inflatable rings around the pumping unit, the lowermost of said rings forming a water-tight partition between the suctio and discharge sides of the pump.

4l In combination with a well casing, an

`adjustably mounted pumping unit consisting of a vertical lmotor ina water-tight housing and a rotary pump directly connected to the motor-shaft, said well casing forming the discharge conduit for the fluid pumped, an inflatable ring around the pumping unit, and means extending to the surface of the ground for inating and for collapsing said ring.

5. In combination with a well casing, an adjustably mounted pumping unit consisting of a vertical motor in a water-tight housing, and a rotary pump directly connected to the motor shaft, said well casing forming the discharge conduit for the fluid pumped,

-the fluid pumped surrounding said motor in the water-tight housing, and means for suspending and for withdrawing the pumping unit. 6. In combination with a well casing,.an

`,adjustably mounted pumping unit conslsting of a 'vertical motor in a Vwatertight housing and a rotary pump directly connected to the motor shaft, said well casing forming the discharge conduit forthe fluid pumped, and means for providing energy-leads, a lubricant and other elements necessary for opera tion ofthe pumping outfit.

7. In combination with a well casing, an adj ustably mounted pumping unit consisting of a vertical motor in a watertight housing and a rotary pump directly connected to the motor-shaft, said well casing forming the discharge conduit for the fluid pumped, and

a pipe for compressed air leading into the motor housing to blow out occasionally seepage water.

8. In combination with a well casing, an adjustably mountedl pumping unit consisting of a vertical motor in a water-tight housing, and a rotary pump directly connected to the motor shaft, said well casing forming the discharge conduit for the fluid pumped, the fluid pumped surrounding said motor in the water-tight housing, and a thrust Abearing located in the motor housing to take upl unbalanced pump thrust.

9. In combination with a well-casing having 'a vertical series of perOratiOnS, an adjustabiy mounted pumping unit with its motor, a discharge pipe extending vertically from the pump to a point above the uppermost well caslng perforations, and an inflatable sealing ring at the upper end of the discharge pipe to form a watertight joint between suction and pressure zones.I

10. In combination with a well casing having a vertical series of perforations, an adjustably mounted pumping unit with its motor, a discharge pipe extending vertically from the pump to a point above the uppermost well casing perforations, and an inflatable sealing ring at the upper end of the discharge pipe to form a watertight joint between suction and pressure Zones, and collapsible and expansible anchor-rings at the pump unitfor anchoring the same to the well casing.

11. In combination with a well casing having a vertical series of perforations7 an adjustably mounted pumping unit with its motor, a discharge pipe extending vertically from the pump to a point above the uppermost well casing perforations, an inflatable sealing ring at the upper end of the discharge pipe to form a watertight joint between suction and pressure zones, collapsible and expansible anchor-rings at the pump unit for anchoring the same to the well casing, and such anchor rings constructed to provide fluid passages.

12. In combination with "a well casing, an adjustably mounted pumping unit with its motor, and collapsible and expansible anchor-rings at the pumping unit for holding the same in the Well-casing.

13. In combination with a well casing, an adjustably mounted pumping unit with its motor, collapsible and expansible anchor rings at the pumping unit for holding the same in the well casing, the lower portion of the discharge conduit from said pump surrounding the motor.

14. In a vertical pumping unit, a motor inclosed in a watertight casing of smooth vto separate the said inlet from the said outlet of the pump and to prevent the return of pumped water to said inlet.

16. In a vertical shaft pumping unit as set forth in claim 14 and in combination with said casing sealing means constructed and adapted to seal said casing within a well to separate the said inlet from the said outlet side of the pump and to prevent the return of pumped water to said inlet, said sealing means comprising an inflatable annular casing substantially as shown and described.

17. In a vertical shaft pumping unit as set forth in claim 14 and in combination with said casing sealing means constructed and adapted to seal said casing within a well to separate the said inlet from the said outlet Y side of the pump and to prevent the return of pumped Water to said inlet, said sealing means comprising an inflatable annular casing substantially as shown and described and connections whereby said casing may be inated or deflated from a remote oint..

ROBERT S HORR. 

